Abstract：The influence of cross-correlation among three pairs of soil parameters on the reliability of reinforced retaining wall under various destructive modes are discussed. The three pairs of soil parameters are as follows：(1) the cohesion and friction angle；(2) the friction coefficient between fill and geotextile，and friction angle of fill；and (3) the friction coefficient between fill and ground，and friction angle of fill. The reliability indexes are increased if the negative correlation among parameters is considered. The reliability indexes are reduced or increased if the positive correlation among parameters is considered. The anti-slide reliability is reduced when the positive correlation among the friction coefficient between fill and ground and the friction angle of fill is applied. In contract，the reliability is increased when the positive/negative correlation among other parameters is applied. Overturn failure of the reinforced retaining wall is highly impossible if the stability requirements of other destructive modes have been satisfied. The cross-correlation between parameters is inherent character of soil，whether to consider it depends on the significance of project.
